the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Sarcopterygii (class)
Tetrapoda (no rank)
Amniota (no rank)
Mammalia (class)
Eutheria (superorder)
Carnivora (order)
Ursidae (family)
Ursus (genus)
Ursus maritimus (species)
polar bear (primary common name)
[hide inferior taxa]